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Grant Forums Junkie Location: Newcastle, NSW, Australia Registered: May 2002	Re: Cold idle problem on 4AGZE, Microtech Sun, 08 September 2002 11:06 I cannot remember if the 4AGZE uses a stepper motor for idle control but as just about every other Toyota engine does then it's likely. To my knowledge, Haltech is the only manufacturer to offer stepper control. If your Microtech has a PWM output then you can use something like a Ford PWM idle valve or any number of other similiar valves found on other cars. Other than that, use one of the ON/OFF outputs to switch a vacuum solenoid based on water temp. While aftermarket computer manufacturers would like people to believe a cold start idle valve is not required i am yet to see an engine work even close to a factory system without one. [Report message to a moderator]

	Subject	Poster	Date
	Cold idle problem on 4AGZE, Microtech	pepsicola	Sat, 07 September 2002 08:15
	Re: Cold idle problem on 4AGZE, Microtech	Ribbo	Sat, 07 September 2002 09:05
	Re: Cold idle problem on 4AGZE, Microtech	gt20v	Sun, 08 September 2002 01:39
	Re: Cold idle problem on 4AGZE, Microtech	faulksy	Sun, 08 September 2002 04:01
	Re: Cold idle problem on 4AGZE, Microtech	gt20v	Sun, 08 September 2002 10:29
	Re: Cold idle problem on 4AGZE, Microtech	Grant	Sun, 08 September 2002 11:06
	Re: Cold idle problem on 4AGZE, Microtech	gt20v	Sun, 08 September 2002 12:43
	Re: Cold idle problem on 4AGZE, Microtech	FLY PSI	Mon, 09 September 2002 08:14
	Re: Cold idle problem on 4AGZE, Microtech	gt20v	Tue, 10 September 2002 01:19

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